Double-acting oil and water pump



July 1, 1925. 1.544.633

A. u. soon JR 7 DOUBLE ACTING OIL AND WATER PUMP 3 Sheets-Sheet 1- INVENTQR I 3' Auqusrus D- CoqK JR.

4r ran/v3? July 7, 1925. 1,544,633

, A. D. COOK, JR

DOUBLE ACTING OIL AND WATER PUMP Filed May 14, 1923 3 Sheets-Sheet 2 I 3:" i o 4" ,50 8 2a a 27 g 2a P--. i 24 n 7' E 1 ,1 2

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INVENTQR Ausus'rus D. Coon JR.

July 7, 1925. I 1,544,633

A. D. COOK, JR

DOUBLE ACTING OI L AND WATER PUMP Filed llay 14, 1923 3 Sheets-Sheet 3 Ausus'rus D. CooK JR.

Patented July 7, 1925.

UNITED STATES,

* AUGUSTUS 1). 0001:, JR. or LAWBENCEIBURG, INpI'AnA.

DOUBLE-ACTING on. AND WATER PUMP.

Application filed, m 14, 1923. Serial in. 638,818.

To all whom it may concern:

Be it known that I, AUGUSTUS D. .COOK, J r., a citizen of the United States, residing at Lawrenceburg. in the county of 'Dearborn and State of Indiana, have invented certain new and useful Improvements in Double'Acting- Oil and Water Pumps, of which the following is a specification- I The object of my invention is to provide simple, efficient, convenient and easily opera-ted means for locating, anchoring and releasing a division stuffing box in a deep well. I i

My invention consists in the construction, combinatiouyand arrangement of parts as herein set forth and claimed.

In the drawings: 4

Fig. 1 is a view partly in vertical section and partly in elevation showing a section of a tubular well cylinder containing the division housing withthe stufling. box in anchored position therein, theplungerrod, plungers and part of the division housing and stufling box being shown in elevation;

Fig. 2 is a plan view enlarged of the anchoring unit onthe line 22 of Fig. 7,the division housing beingshown in transverse section; p I

'Fig. 3 is a side elevation of the anchoring unit;

Fig. 4vis a plan View of the a c Fig. 5 is a side elevation of the division housing; L I

Fig. 6 is a bottom view thereof;

Fig. 7 is an enlarged vertical section division I houspartly in elevation showing the stufling box in anchored position in the division hous- Fig. 8 .is a perspective view of the anchoring unit and stuffing box;

Fig.9 is a perspective view of one of the anchoring dogs; and h h Fig. 10 is a partial sectional and plan view showing the anchoring dogs. in released position.

In order to illustrate a preferred embodimentof my invention I haveshown a working barrel comprising. an outer tube or cylinder 1 connected at its top to tubular coupling 2 and at its bottom to tubular coupling'3, and an. inner sectional tube 4 connected at its top to tubular coupling 2 and having its lower end 5 tapered and ada ted to project and wedge into tapered pacing 6 in coupling 3; Inner tube 4 is cal tube having the same interior diameter as the lower section of inner tube 4. It has a semi-circular outwardly extending flange 9 at its top on one side and a similar flange 10 at its bottom on the outer side, said flanges being connected by verticalrihs 11 and 12 and said flanges and ribs forminga division. in the'space between tubes 1 and 4. Said division housing is provided'upon one side near its top. with ports 13 and on'the other side near its'bottom with ports'",14.- Near theflongitudinalcenter of saiddivision housing and intermediate of said ports I provide an interior circumferential channel 15. Inner tube 4 is provided inits lower end with a suitable foot valve 16 which has .wedging engagement therein. I

Division stufling box 171comprises ring 18 having inner tapering wall 19 and .cut-

away on its outer peripheryto form space 20to receive cup-leather'21. Said ringand cup-leather are provided with vertical bolt holes 22 and 23, respectively. 'Moun'ted above said cup-leather and ring I provide tubular stem 24 having outwardly extending flange 25 provided with threaded holes 26 adapted to register with bolt holes 22 and 23 in said cup-leather and ring, respectively. The inner wall 19 of the lower end [of tubular, stem 24' is beveled or flared outwardly to coincide with tapering. wall 19 and the upper inner wall of said tubular stem is cutaway to form packing space 27 in which is inserted cup-leather 28,.flanged spacing sleeve 29 cup-leather 3O andre taining ring 31 screwed therein. 'Tubular' stem 24 is provided upon its upper end with cylindrical web 24 integrally formed thereon and having the lower side of its peripheryv adapted to rest on shoulder 8 to limit the downward movement of, the stuffing box and to support it within division housing 7.-

My novel anchoring unit comprises hollow disk 32 of slightly smaller diameter than the inner wallof inner tube 4 and is provided with a plurality of 'vertical bolt holes 33 receiving bolts 3a adapted to register with bolt holes 22, 23 and 26. Anchoring dogs 35 each having curved outer end 35 and inner end 35 are pivotally mounted on bolts 34 extending upwardly through the bolt holes in hollow. disk 32, ring 18 cupleather 21 and 'fiange' 25 in which latter said bolts are screwed into holding engagement. A coil expansion spring 38 enciriling each bolt 34 in recess of dogs '35 and attached at one end to hollow disk 82 and at the other end to dog 35 serves to normally hold the, ends. 35' of said dogs in engagement with the walls of said division hous ng,including channel 15. and the upper shoulder thereof and-at the "same time to hold I the ends 35" in engagement with plunger rod' 37. a The lower plunger 39 is mounted in inner tube 4 between foot valve 16' and division housin and is provided witlrtapering shank 40 forming the lower end of plunger ro'd' Up er plunger ll is mounted on said plunger rod a short distance above civision housing 7. V i

invention is adapted to be installed in deep-wells having walls of varying types but the ordinary construction consists of a well havin'ga tubular metal casing "01- wall and provided at its lower end with 'atubular strainer through which the oil or water filters into the well. i i

WVhen installingthe apparatus embodying my invention into the well casing the lower end of drop pipe or suction tube a2 is screwed into coupling 2 otsaid working barrel and the working barrel is lowered by "ad'clingfsections of drop pipe until said working barrel rests in the bottom' of the well. The foot valve or bottom check 16 i's'th'en lowered "into position, as shown in Fig'.' :1, by suitable" tools. The lower plunger, division stuifing box, connecting rod and upper plunger are assembled and lowered through the well casing down into operative position, in the working barrel, as shown Fig. 1. When in this position web 24 of the division stufiingb'ox rests upon shoulder '8 or division housing? and said stuffing box is automatically anchored said division housing 'by"do.gs 3'5 engagingnppershoulder 15 of. circular'channel E'Plunger rods? is of uniform diameter for some distance below the anchoring unit ing operation but is provided with a taper 40 above lower plunger 39 so that when it is desired to'remove the interior mechanism for repairs or for other purposes it is only necessary'to' pu'll plunger rod 37 upwardly whereupon taper 40 will automatically en gage the inner ends 35 or dogs 35 and force ends 35 out of engagement with circular channel l5 thereby releasing anchoring unit, division stuifing box, plungers and plunger rod tor withdrawal from the well. hen placing said mechanism in the well the anchoring dogs will automatically engage upper shoulder 15 or channel 15 and prevent upward movement while the lower surface of web 24 will rest'upon the top of shoulder 8 and prevent further downward movement, thereby securely holding the stutfing box in fixed position in the division housing during the operation of pumping and at all other times except when plunger rod 37 is pulled upwardly out of pumping position for withdrawal o1 the mechanism. 7

WhiiIe'I have shown my invention as applied to a double plunger one way work stroke, it may also be used in connection with various other types of operative mechanisms, such "as dOuble stroke type cylinder, one that requires the same amount of power on the up stroke as on the down stroke and also a two or three stroke type cylinder, that is one using two or three sets or separate driv ing rods or lifting rods. 7 While I have shown and described a particular construction and arrangement of parts it, will be understood that various modifications may be made without departing from the scope or spirit or the invention as defined in the claims.

WVhat I claim as new and desire to secure by Letters Patent is: Y V

1'. In a device of'the class described, a tube, having a working barrel therein provided with a shoulder and circumferential channel, adivision stufiing box, an anchoring unit connected to said division stufling box and comprising a hollow disk and aplurality of pivotally mounteddogs adapted to normally press outwardly against the wall of said tube and engage the wall of. said channel, a plunger rod, 'plungers carried by said plunger rod, and said plungeroro'd having a tapered section adapted when drawn upwardly to engage the arms ofsaid dogs whereby they are moved upon their pivots out of holding engagement with said tube.

2. In a device 01 the class described, a

Working barrel having an inner sectional tube, a division housing interposed between the sectionsof said tube and'having a locating shoulder on its upper end and a circular channel therebelow, a plunger -rod,p'lungers carried thereby, a division stuffing box on said plunger rod between'said' plungers and means carried by said division stulfingbor:

"for automatically anchoringand releasing st ifing box and operative mechanism. '3. In a device of the-'classdeScribed, a

working barrel having a division stuffing box therein provided with a shoulder and circular channel, an anchoring unit connected to said division stufling box and comprising a hollow disk and a plurality of pivotally mounted dogs adapted to press outwardly against the wall of said working barrel and adapted to engage the wall of said channel.

4. In a device of the class described, a tube, a working barrel connected thereto, a plunger rod tapering upwardly a portion of its length, a plunger on said plunger rod, a stufi'ing box on said plunger rod within said working barrel and having an upwardly tapering inner wall adapted to cooperate with the upwardly tapering portion of said plunger rod, and means on said stuffing box and said working barrel, respectively, for automatically anchoring said stufiing box to said working barrel.

5. In a device of the class described, a

tube, a working barrel connected thereto and 1 provided with a circumferential channel and shoulder, a division stulfing box, an anchoring unit connected to said division stufling box and comprising a disk, a plurality of .dogs pivotally mounted on said disk and said plunger rod having a tapered section adapted when drawn upwardly to engage the arms of said dogs whereby they are moved upon their pivots out of holding en gagement with said tube and a spring connected to each dog adapted to normally and having a curved end adapted to engage saidplunger rod and the wall of said channel, respectively, for the purposes set forth.

7. In a device of the character described, a working barrel having a circumferential channel and shoulder, a stufling box slidably mounted within said working barrel and having an upwardly tapering inner wall, an anchoring unit connected to sald stufling box and having pivotally mounted anchoring dogs thereon each provided with an arm adapted to engage, said plunger rod and a coil spring engaging each of said dogs whereby said dogs are adapted to engage the wall of said channel, for the purposes specified.

8. In a device of the character described, a working barrel, a plunger rod, a stufling box on said plunger rod and slidably mounted within said working barrel, an anchoring un1t connected to said stufling box and hav- 7 ing pivotally mounted anchoring dogs thereon, eachprovided with an arm adapted to be engaged by said plunger rod whereby said dogs disengage the inner wall of said working barrel, for the purposes specified.

AUGUSTUS D. oooK, JR. 

